Pornchoop D, Siriworasakul W, Klomuang P. PERSONAL DEVELOPMENT ON GROUND SAFETY OF THE ROYAL THAI AIR FORCE. PNRU JHSS [internet]. 2023 Dec. 30 [cited 2026 Sep. 29];18(2):31-57. available from: https://so05.tci-thaijo.org/index.php/PNRU_JHSS/article/view/264819